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HelpReverse T3, Serum
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Gold Top (SST-Gel)
Specimen Requirements
Preferred:
Container/Tube: Gold Top (SST-Gel)
Minimum Volume: 0.8 mL (Note: This volume does not allow for repeat testing.)
Collection Instructions: Separate serum from red cells.
Also Acceptable:
Container/Tube: Red Top Tube
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
| Freeze/thaw cycles | Stable x3 |
Reference Range
See table.
|
Age |
Range (ng/dL) |
|---|---|
|
Premature (26 to 31 wk) |
33.0−147.0 |
|
Premature (32 to 35 wk) |
49.0−217.0 |
|
Full-term (2 to 7 d) |
33.0−206.0 |
|
8 d to 5 m |
13.0−107.0 |
|
6 to 12 m |
8.1−52.8 |
|
1 to 15 y |
8.3−22.9 |
|
16 y and older |
9.2−24.1 |
Methodology
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
CPT
84482
Test Alias
Reverse T3
T3, Reverse
Triiodothyronine, Reverse
T3 (Triiodothyronine). Reverse, Serum
Report Available
3 - 5 days